Gauge cock for boilers



June 1 1926.

W. c. SMITH GAUGE COCK FOR BOILERS Filed June 15 1925 INVENTOR flfdf 5/22/72 ATTORNEY Patented June 1, 1926.

PATM l i: i i

WILLIAM (3. SMITH, OF CORSICANA, TEXAS.

GAUGE coon rota BoILnns.

Application filed June 13, 1925.

This invention relates to new and useful improvements in gauge cooks for boilers.

The object of the invention is to provide the plug of the cock with a flat face or seat 5 having a short projecting nipple; whereby the pecking or seating member will seatfiat against said face and also whereby the nip ple will not embed deep enough in the packing to cut the same; and whereby the life of the packing will be prolonged; and further whereby the flow will be effectually cut off when the cock closes.

A further object of the invention is to make provision for the use of a longitudinally adjustable multiple-sided packing which permits the use of piston packing, lead bars or other material and enables the use of each side of the material.

Another object of the invention is to prvide a simple means of securing the packing or seat in place.

Still another object is to provide a nipple having only a short projection from a fiat surrounding face, whereby the embedding of the nipple into the packing is limited, but particularly whereby the packing seats around the nipple and effects an eflicient closure or cut-off.

A construction designed to carry out the invention will be hereinafter described together with other features of the invention.

The invention will be more readily understood from a reading ofthe following specification and by reference to the accompanying drawings, in which an'example of the invention is shown, and wherein Fig. 1 is a side view of a gauge cock constructed in accordance with my invention, a portion being in section and a portion in elevation,

Fig, 2 is a plan view of the same,

Fig, 3 is an enlarged crosssectional view on the line 3 -3 of Fig. 1,-

Fig. 4 is a perspective view of the fastening wedge, and

Fig. 5 is an enlarged sectional view taken on the line 5'5 of Fig. 2.

In the drawings the numeral designates a plug having a screw-threaded shank 11 for inserting into the boiler. The plug has a reduced flat bracket 12 beyond its shank. At the outer end of the bracket is a boss 13,11aving a flat vertical face or seat 14 in the center of which is a short nipple 15. An axial Serial No. 36,827.

passage 16, extendsthrough the plug and connects with a reduced orifice 17 therein.

The bracket 12 has on its upper side an upright ear 18 which is pivoted between ears 19 on a pin 20 atthe rear of a head 21, Forwardly of the cars 19 the head has a vertical .slot 22 extending therethrongh. This slot is preferably square in cross-section, but may be otherwise shaped. On the outer end of the head is a weight arm 23.

The slot 22 being many-sided or square as is shown will. receive a strip 24 of piston packing, bar of lead or other yieldable material, which may be adjusted vertically of the head and longitudinally of itself. Such packing and scrap as are found around a boiler room may be used, An important feature is the means for fastening the strip 21 inplace, which I have shown in the form of a wedge. At the back of the upper portion of the slot I form an inclined channel. 25 and provide guideways 26 on each side of the rear wall of said channel.

A wedge 27 is confined in the channel'and extends above the head at which point it receives a retaining pin 28. from each side of the lower end of the wedge and engage in the guideways, which terminate short of the top of the channel so that upward movement of the wedge is limited. In order to insert the wedge the guideways are extended to the bottom of the slot as is shown in Figs. 1 and 5.

The wedge being inserted and held in the channel by its pin 28 the strip of packing 24: is inserted from the bottom of the slot,

the arm 23 being lifted to avoid the nipple 15. By drawing the wedge down into the channel it engages the side of the strip and fastens the latter in place. To adjust the packing vertically it is merely necessary to loosen the wedge.

It will be seen that the projection of the nipple 15 is slight and said nipple is reduced to a comparatively sharp edge at its outer end. When'the arm 23 swings down the packing strip 24 will engage the nipple and the latter willembed in said strip so that the fiat face 14 will receive the flat side of said strip and form an effective seal. When the joint between the nipple and the strip Lugs 29 extend shows signs of leaking, the strip may be adjusted to engage the nipple at another point.

the strip may be removed after one side has i been used and reinserted in the slot 22 With one of its other sides exposed to the nipple.

Various changes in the size and shape of the di'derent parts, as Well as modifications and alterations may be made Within the scope of the appended claims.

What I claim, is:

1. In a gauge cock, a plug having a passage with a discharge orifice, a head hinged to said plug, an adjustable sealing strip slidingly carried by the head to close said orifice, a Weight arin mounted on the head, and fastening means upon the nead for form ing the sealing strip laterally against its bearing in the head.

2. In a gauge cook, a plug having a pas- With. a discharge orifice, a head hinge to said plug and having a vertical slot and inclined intersecting channel, an adjustable sealing strip reversibly carried by the slot of the head, a Weight arm upon the head, and a Wedge mounted in the channel of the head and h terally engaging the packing for fastening the same.

3. In a gauge cook, a plug having a passage, a nipple on the plug at the end of the passage, a head hinged on the plug and having a vertical slot, an inclined channel in the head conti uous to the slot, said slot being angular in cross-section, a packing strip adjustable longitudinally and reversibly in the slot of the head, a Wedge confined in the channel and engaging the packing strip, and a Weight arm carried by the head.

41-. In a gauge cock, a plug having a pas sage, a nipple on the plug at the end of the passage surrounded by a flat seat, a head hinged on the plug and having a vertical slot, an inclined channel in the head contiguous t0 the slot, said slot being angular in cross-Section, a packing strip adjustable longitudinally and reversibly in the slot of the head, a Wedge confined in the channel and engaging the packing strip, and a weight arin carried by the head.

In testimony whereof I alfix iny signature. i

WILLIAM 0. SMITH. 

